Energy In Ecosystems 3.2 Flashcards
What does the food chain represent?
A flow of energy between living organisms
What do the arrows represent
Eaten by
The direction in which energy flows
What is the first organism in the food chain called?
Producer
What are the organisms called after the producer
Consumer
What is the order of consumers
Primary
Secondary
Tertiary
What is an omnivore
An animal that eats plants and animals
Explain the term species
A species is a group of organisms that can interbreed and produce fertile offspring
How much energy will be passed on in the food chain
10%
How much energy is lost
90%
What is a pyramid of numbers?
A diagram which described how the numbers of organisms vary at each tropic level in a food chain
What is a pyramid of biomass
Diagram which illistrates the decrease in mass of organisms which each successive tropic level in a food chain by showing the total mass of living organisms at each level
What is a pyramid of energy
Diagram which illistrates the decrease in energy content of organisms with each successive tropic level
What Is decomposers
These are bacteria and fungi wich break down the remains of other organisms
What are decomposers useful for?
Allowing nutrients to be recycled and so get back in the foid chain
What order does decomposers such as fungai and bacteria convert proteins and nitrogenous into?
Ammonium to nitrites to nitrates
Name four important chemicals which pads through living organisms and are then recycled?
Water
Carbon
Nitrogen
Other minerals
Role of nitrifucation
Converts ammonia to nitrite
And nitrite to nitrate
Role of demodulation
Nitrite to Notrogen
Role of nitrogen fixation
Nitrogen to ammonia
Name competition for animals
Food
Shelter
Breeding
Mates
Name competition for plants
Light
Minerals in soil
Water
Space for growth
What does Barley compete for?
Sunlight
Minerals
What does gannets competing for?
Nesting area
